Heel-clamping machine.



S. STELLA.

HEEL CLAMPING MACHINE. APPLICATION FILED OCT. 16. 191! 1,282,971 a Patented 001;. 29, 1918.

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HEEL CLAMPING MACHINE. APPLICATION FILED OCT. 16, I917.

LZQQYL Patented 001;. 29, 1918,

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A TTORNE Ya SALVATORE STELLA, 01? BROOKLYN, NEW YORK.

HEEL-CLAMPING MACHINE Specification of Letters Patent.

Patented @ct. 29, 11918.

Application filed October 1a, 1917. serial no. waste. 1

Brooklyn, county of Kings, and State of New York, have invented new and useful Improvements in Heel-Clamping Machines,

of which the following is a specification.

This invention relates to a machine in which a clamping device is essentially employed to securely hold a wooden high French or Cuban glued heel to the rear of the shoe until the glue sets.

The invention is designed to provlde means controlled by the operator for moving a work support in a concentric circle and means for oscillating the support about its axis.

The object of the invention is to rotate the work support so as to arrange the work or shoe in a convenient position to operate the clamping devices.

Another object of the inventlon 1s to mountthe support on a carriage so that when the glued heel is clamped n 1ts proper place on the upper, the carriage can be moved out of the way and the next carnage with its support brought into action.

The invention comprehends a plurality of carriages each being provided w th a work support and means for supplylng a blast of air directly againstthe glued heels while they are traveling around the track, thus when the first support reaches the starting point the glue will be dried and the shoe can be removed.

The novel features of the invention are more fully described in the following specification and claims and illustrated in the accompanying drawings in which:

Figure 1 represents a plan view of a machine embodying this invention.

Fig. 2 is a front elevation of a latch device.

Fig. 3 is a vertical section taken along the line 2 z of Fig. 1.

Fig. 4 is a front elevation of a carriage and work support. V

In these drawings the letter a designates a column having a spider 72 secured to the upp' part of the column. A circular track 0 is xed on the ends of the spider arms and it has channels d located on the inner and outer portion of the track. An. upwardly curved portion e in the track leads to the first position on the track.

carriage consisting of a pair of horizontally positioned idler rollers f is made to engage the channels in the track. Caps 9 bolted to the lower portion of the carriage will journal the rollers relative to the channels. Side rollers it best seen in Fig. 4, will ease up the lateral friction on the channels and give easier rotation to the carriage. A post 2' having a socket j in its I upper end, forms the upper part of the carrlage.

A work support including a shaft is provided with a pin m coacting with the socket can freely revolve on the post. On the upper end ofthe shaft is removably mounted a work holder n equipped with a pin 0 to engage a hole in the last 2 fitted into a shoe upper g of ordinary construction. The holder n is slidingly mounted on the shaft so that it can be removed and other holders substituted for different shapes of lasts. The holder as indicated in Fig. 4, has'a. rim 1' to prevent lateral movement of-the last relative to the holder.

The clamp for pressing the heel .9 downward after 1ts upper portion is coated with glue consists of a screw t having a handle a for rotating the screw up or down.-- The screw engages a threaded upper part of a yoke member '12 secured to the side of the said shaft. The lower end of the screw can turn freely ona bifurcated head 11: pivoted at w to an intermediate coupling The coupling is in turn connected at 12 to a base member 13 forming the lower end of the clamp. The base member can be provided with a leather cushion 14 to contact with a lift or tap fixed on topof the heel.

By this arrangement the base member 13 can swivel to fit itself to the top surface of the heel, while the screw remains in its vertical position. A guide rod 15 slidingly coacting with a lug 16 on the side of the head will prevent the head and coupling from revolving when the screw is operated.

Slidmgly connected to an extension of .the' yoke 'v is a plunger 17 pivoted at 18 to a I withthe cam lever 19 outside.

with a leather cushion to contact with therear ortion of the shoe. The yoke extension is provided with a slot in which the plunger 17 is loosely arranged to guide it up or down, and a spring 17 normally forces the plunger against the wall of the slot to eliminate play room. The slot ermits the plunger to move laterally against the action of the spring, thus compensating for the arc of oscillation transmitted to the pivot 18 when the cam lever is actuated. The upper end of the rod 21 is fixed to the plunger and the upper face of the Washer 20 contacts with the lower part of the extenson, so that when the spring is compressed .the washer will be forced against the lower part of the extension.

This device by the downward and forward pressure of the coiled spring will hold the heel against backward movement when it 1s placed on to the upper as shown in Fig. 3. When it is desired to release the presser foot from contact with the heel, the cam lever is operated to bring'the highest point of the cam opposite the handle, on to the top of the extension thus lifting the rod and compressing the spring to move the presser foot out of action or away from the heel. By rotating the screw 27 the clamp isdisengaged or raised from the top of the heel and the shoe can then be readily removed.

A latch including a vertical 'pin 24 passes through a hole in the forward portion of the circular track. This pin is normally pressed upwardly by a coiled spring 25 and when the carriage ismoved to a position over the pin or at the front part of the machine, the in will be pressed downward by a lug 26 xed to one'side of the carriage. When the carriage reaches the center of the pin 24 it will snap into engagement with a hole in the post-and hold the carriage against movement. The pin can be unlocked from the carriage by a lever or treadle 27 located within easy reach of the operator.

The work support is and the clamping device above it can oscillate about the post 2', and hence when it is desired to remove or place ashoe in position on the support, it

is given a half turn as indicated in Fig. 1 After the shoe is in position the clam ing device can be turned with the cam han 1e and the back of the heel pointing toward the axis of the track. Any number of the clamps can be mounted on the track depending on its size, for example on the size shown in the drawing, the number would be' about 24: each eeann on the top of the column. The drum has nozzles 30 projecting from the side of the drum and pointing toward the heels of the shoes while they travel aroundthe track. A pipe 31 connected to the bottom of the drum and leading from a blower, pump, or other air supply will conduct air pressure into the drum. The nozzles direct the air in a constant stream on to the backs of the heels on a line with theglued joint so that when a clamp with its shoe travels around the track, when it arrives at its starting point, the glue will be dried and the shoe can be removed.

I claim 1. In a heel clamping machine the combination with a carriage and a track therefor, of a shoe support rotatively mounted on the carriage, a screw carried by the support, and a movable base member connected to the screw for coaction With the heel of the shoe.

, 2. In a heel clamping machine the combination with a carriage and a track therefor, of a shoe support rotatively mounted on the carriage, a screw carried by the support,

5 and a swiveling base member connected to the screw for coaction with the heel tread of the shoe 3. In a heel clamping machine the combi-' nation with a carriage and a track therefor, of a shoe support rotatively mounted on the carriage, a screw clamp carried by the support, and a spring the back of the heel.

4. In a heel clamping machine the combination with a carriage and a track therefor,

of a shoe support rotatively mounted on the carriage, a screw clamp carried by the suport, a spring presser foot to engage the presser foot to engage back of the heel, and a lever for operating the presser foot.

5. In a heel clamping machine the combination wlth a carriage and a track therefor,

- of a shoe support rotatively mounted on the carriage, a screw clamp carried by the su ort, a spring presser foot to engage t e ack of the heel, and a cam lever for operating the presser foot.

6. In-a heel clampin machine the combination with a track 0 a carriage mounted on the track, a sprlng controlled latch for locking the carriage to the track, a shoe support rotatively mountedon the carriage, a

screw carried by the support, a swiveling base member connected to the screw for coaction with the tread of the heel, a spring presser-foot carried by the support'to engage the back of the heel, and a cam lever nation with a circular track, of a plurality of carriages mounted on the track, a shoe support connected to each carriage, and means including a tank located Within the track for blowing a current of air on to the heel portions of the shoes.

In testimony whereof I have hereunto set my hand in the SALVATORE STELLA.

Witnesses:

GRACE DE Von, WILLIAM MILLER, 

